676
FXUS65 KBYZ 051255
AFDBYZ
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BILLINGS MT
555 AM MST WED NOV 5 2025
KEY MESSAGES
- MILD CONDITIONS EXPECTED THROUGH THE WORK WEEK (50S-LOWER 60S).
- STRONGER WIND GUSTS DEVELOP OVER THE WESTERN FOOTHILLS THIS
AFTERNOON INTO THURSDAY. TRAVEL IMPACTS TO I-90 AND US-191
POSSIBLE.
- BEST CHANCES (40-60%) FOR LIGHT PRECIPITATION ARRIVE FRIDAY-
FRIDAY NIGHT.
- NEAR CONTINUOUS LIGHT SNOW FOR WEST FACING MOUNTAIN SLOPES
THROUGH FRIDAY NIGHT.
- COLD FRONT FRIDAY NIGHT BRINGS COOLER AND MORE SEASONAL
TEMPERATURES AND MAINLY DRY CONDITIONS FOR THE WEEKEND.
DISCUSSION
TODAY THROUGH TUESDAY...
A PROGRESSIVE PATTERN WITH SHORTWAVES MOVING THROUGH THE FLOW
CONTINUES TO IMPACT THE REGION THIS WEEK BEFORE RIDGING BUILDS IN
OVER THE WEEKEND.
OUTSIDE OF THE MOUNTAINS, THE CHANCE OF PRECIPITATION REMAINS
LOW, ESPECIALLY THIS EVENING INTO THURSDAY, DUE TO PERSISTENT
DOWNSLOPE FLOW. CURRENTLY, THERE IS A LESS THAN 15% CHANCE OF ANY
PRECIP OVER THE PLAINS THROUGH THURSDAY. ABOVE 8,000 FT IN THE
ABSAROKA/BEARTOOTH MOUNTAINS, 1-3" OF SNOW IS EXPECTED OVER WEST
FACING SLOPES.
THE NEXT WAVE, AND ASSOCIATED COLD FRONT, FRIDAY INTO SATURDAY
HAS A SLIGHTLY BETTER CHANCE FOR A MORE WIDESPREAD ROUND OF
PRECIP, WITH A 10-30% CHANCE OF UP TO 0.1" OVER THE PLAINS. SNOW
LEVELS WILL DECREASE INTO SATURDAY AS TEMPERATURES COOL, LEADING
TO A 40% CHANCE OF AT LEAST A FEW INCHES OF SNOW ABOVE 7,000 FT IN
THE ABSAROKA/BEARTOOTH MOUNTAINS. MORE NOTABLY, THE COOLING
TEMPERATURES MAY ALSO ALLOW LIGHT ACCUMULATIONS OVER THE FOOTHILLS
AND OVER THE HIGHER HILLS IN THE EAST, WITH A 20-50% CHANCE OF AT
LEAST 0.1" OF SNOW. CALL 511 OR VIST 511MT.NET IN MT OR
WYOROAD.INFO IN WY FOR THE LATEST ROAD CONDITIONS.
IN ADDITION TO LIMITING PRECIP, DOWNSLOPE FLOW WILL BRING PERIODS
OF GUSTY WIND TO THE REGION. THIS AFTERNOON INTO THURSDAY,
CONDITIONS ARE FAVORABLE FOR STRONG GAP WINDS OVER THE
LIVINGSTON/NYE AREA AS 700 MB WINDS ARE ORIENTED ALONG THE
PARADISE VALLEY WITH WIND SPEEDS UP TO 50 KTS AND A PRESSURE
GRADIENT AROUND 11 MB. A WIND ADVISORY IS IN EFFECT FOR THIS AREA
FROM 2 PM TODAY THROUGH NOON THURSDAY FOR GUSTS UP TO 65 MPH.
ADDITIONALLY, BEHIND A FRONT MOVING THROUGH EARLY THURSDAY MORNING,
WINDS WILL INCREASE ALONG THE US-191 CORRIDOR, WHERE GUSTS AROUND
40-50 MPH ARE EXPECTED. WINDS IN THESE AREAS WILL INCREASE AGAIN
FRIDAY INTO SATURDAY, WITH GUSTS AROUND 40-50 MPH CURRENTLY
EXPECTED.
ANOTHER AREA TO KEEP AN EYE ON WINDS TONIGHT IS THE RED LODGE
FOOTHILLS, WHERE SOME MODELS ARE HINTING AT MODERATE MOUNTAIN
WAVE (30 TO 45 MPH) WIND GUST POTENTIAL. THE STRONGEST WINDS FOR
THIS AREA WOULD ARRIVE AROUND SUNSET AND PEAK AS THE PACIFIC FRONT
MOVES THROUGH AROUND 1-2AM. OVER THE REST OF THE REGION, EXPECT
GUSTS OF 20-40 MPH AT TIMES THROUGH SATURDAY.
UPPER LEVEL RIDGING BUILDS IN OVER THE REGION LATE SATURDAY INTO
EARLY NEXT WEEK, ALLOWING WARMER AND MOSTLY DRY CONDITIONS.
HIGHS WILL BE IN THE 50S TO LOW 60S THROUGH FRIDAY, FALLING TO
UPPER 30S OVER THE EAST AND 40S OVER THE REST OF THE REGION
SATURDAY. AS THE RIDGE BUILDS IN, HIGHS WILL RETURN TO 50S TO LOW
60S BY MONDAY. ARCHER
AVIATION
LOW CLOUDS AND PATCHY FOG PRODUCING MVFR TO IFR CONDITIONS OVER
PORTIONS OF THE AREA WILL PERSIST INTO THE MORNING HOURS. EXPECT
CONDITIONS TO IMPROVE TO VFR BY 18Z. EAST TO SOUTHEAST WINDS WILL
PREVAIL OVER THE AREA TODAY, WITH SOUTHWEST WINDS INCREASING ALONG
THE WESTERN FOOTHILLS THIS EVENING AND TONIGHT. SW WIND GUSTS TO
50 KTS ARE POSSIBLE AT KLVM THIS EVENING/NIGHT. STP
PRELIMINARY POINT TEMP/POPS
TDY THU FRI SAT SUN MON TUE
-------------------------------------------------------
BIL 056 042/060 036/057 035/049 026/050 035/062 041/061
1/E 00/N 04/W 21/N 00/B 00/B 01/B
LVM 059 040/054 034/052 026/045 023/053 033/062 037/058
1/N 11/N 16/W 20/B 00/B 00/B 11/B
HDN 061 039/061 032/057 033/047 023/049 028/062 037/061
0/B 01/B 05/W 42/W 00/B 00/B 11/B
MLS 055 038/062 033/055 030/040 021/044 026/058 039/058
0/B 00/N 01/B 22/W 00/B 00/B 00/B
4BQ 057 044/060 034/056 033/041 024/044 028/059 039/057
0/B 00/B 01/B 32/W 00/B 00/B 00/B
BHK 051 035/060 030/052 026/037 016/041 021/054 034/056
0/B 00/N 00/B 31/N 00/B 00/B 00/B
SHR 062 037/059 029/057 027/043 020/048 026/065 036/059
0/B 02/W 03/W 51/N 00/B 00/B 01/B
BYZ WATCHES/WARNINGS/ADVISORIES
MT...WIND ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO NOON MST
THURSDAY FOR ZONES 65-66.
WY...NONE.
WEATHER.GOV/BILLINGS
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